Railway-signal midway wire-compensator.



R. L. POWELL.

RAILWAY SIGNAL MIDWAY WIRE COMPENSATOR.

APPLICATION FILED MAR. 10. um.

1 ,272,3 14. Patented July 9, 1918.

M! VE N TOR figzizaldfiJ azmed WITH/{58858 A TTORNEYS n: nouns PETERS 00.. "mm 1.1mm wunmumu. n. L

Y rezcificaticn of Let ers'lat ntit.AiiitvvAmszieizmizi1.ii:;1.imra.Y WIBE-COMEENSATOR Patented. J uly 9;, 1918.

Application filed March 10, 1917. Serial no. 153 873.

To ail wliom z'tmay concern:

/ Be it known that I, 'REGINA'LD'LIONEL PownLL, a' subject of the King- 0f Great Britain and Ireland and Emperor offlndia, residing at Cawnp re. Indiahave i vented new and "useful Railway-Signal Midway Wire-(loin ensato'rs, of which the following isaspeci cation.

This inventionis intendedto compensate signal wires which beingsubject to atInOS-L phericinfiuences alternately" expand and ntmcewhen afiectedby heat orlcold .dur-. ing the varyingte nperatures of the day and night. f i g l.lie c'ont"action. of wires has'the efiect of. involuntarily lowering signals without beiiigznorkedby thesignal man a d the oibt-J vidus' danger to human life that may result from such acqndition af thingsjis apparent;

as signals normally at danger? "mightlbe. released contraction and collisions vvfoil the other hand the expenses of ignal wires, does not allow of signals being sufficiently lowered to the proper degree,

and ied rivers havestrietinstriicti oiisto treat iseel het-fu ;lewe a st l ti s detentions to trainsia eeenffi ifi n ki r s ts-f i te t n i i d-in; t e ame e yiesi dia n s 1 Whisk F ser shows t ower;

n ginne iii fiier-i- .1 i .2 ShQ tl esi ii v 'ehe' mi enr te -n. 1 4" :1, fish rs-il s new r the mpensator.

W, 'di lili iieylibe the lever A and the signal, and takes up the expansion and contractien of the wires, leaving the signal in its normal' or danger position.

The conipensatpr isfix -The length; eta-the wire from dB-t0 is, equal to the length of the wire from O'to Q.

l is the standard or post to which a bracket L is fixed.

M and N are weighted cranks, which work as also the floating lever H on a pivot 2 fixed to the bracket L. E and K are the weights fixed to the cranks M and N respectively by stud bolts and blocks.

G and I are links the upper ends of which are pivoted-to the cranks M and N respecma se se-e r elinks are connected to the floating lever H by means of a pin U, which passes through the slots in the links, and the slot in the floating lever H.

The link G has a slot of about 2 inches in length, and at the end on its under surface'a studpin T is fixed. The stud pin T, engages in the teeth of the floating lever H, as will he explained hereafter. The link I has a slot from a little below the fork end to nearly the end of the l ln he ject of this slot in the link I is to compensate for any unusua tension in the i e 0Q which may occur when the weight R is moved for oiling and cleaning the weight arni'on the signe I Sisa stop fixed t0 the stendard or post,

and'prevents the floating'lever H from passing that point; 1Vis a spring attached to th'e-Ibracke't Land engages the upper end of thefloating lever The compensator acts in the following points D and 0 work inward to one another,

without in any way afi'ecting the signal arm. This is clear vasthe actual length considered as a whole "fronithe pointiBi to remains I the same, as what is lost by contraction 1S compensated for by themoveinents of the points D and 0, so that the tension on the wires remains practically the same as it was before the contraction took place. LThe points D and working inward to one another, causes the weights and -K to rise, as l the weiglit" onthe signal at R is heavier than-theweight K on the crank The links (if and I therefore work upward carrying with themthe pin U whichwork i the slot of the floating lever H. Similarly if the signal wires expand the cranks M and N at the points D and 0 work outward from one another to the extent the wires have expanded and the weights E and K move downward by gravity to take up the slack in the wires due to the expansion, the links G and I working downward, the pin U working in theslot of the floating lever H as already described.

tively at F and J g the lower ends of the The a tion of the compensator when the lever is pulled over to lower the signal is as follows:

The tension on the wire, when the lever A is pulled over causes the point D of the crank M to work inward,'and the upper, end. of the crank M with weight E works up ward, drawin up the link G, the link G has an escapement of about 2 inches and works or slides diagonally for that distance, when the stud pin To engages in atooth of the floating lever H. As soon as the stud pin '1 engages, the escapement ceases. The engagement of the stud pin T in a tooth of the floating lever H fixes the links G and I so that the links, together with the cranks M and N and the floating lever II will now act as a fixed or single piece workingon'the pivot 2 from which the cranksf M and N and the floating lever H are suspended, so

that a further pull of the lever Acauses them A the compensator is as follows:

to work as a whole in a circular motion up ward e. in the direction of the hands of a clock; the lower end of the crank N at O is therefore forced outward and upward, thereby pulling the signal wire from. O to Q and so lowering the signal; 7 V

When the lever A is put back the action of The release of the tension on the wire 30 causes the weight E to descend thereby working the lower end of the crank Mat the point D outward and the link Grand the floating lever II downward in a circular motion 71. e. opposite'to the hands of a clock, the link I andthe crank N, also movingin their proper direction, being part of the fixed piece formed by the engagement ofthe stud pin T, as already described. As soon as "the floating lever H rests against the stop S, the'link I and the crank N stop working, having one fully home, but the crank M and the 'nk G work about another 2 inches and thereby release the'stud pin T from the floating lever and also release theicranks M' and N from each other, which are again free to do their compensation. V

1. A railway signal wire compensator,

V comprisingv weighted cranks to which are attached respectively the wires leadingto the signal and signal lever, amember having limited swinging movement, and a connection between each crank and one endiof the Copiesof this patent may be obtained 7 member.

, 1 7 Washington, 11.0.

swinging member, whereby all the said parts will swing "together.

2. A railway signal comprising weighted cranks mounted on a common pivot and to which are attached respectively the wires leading to the-signal and'signal lever, a swinging member mounted upon the pivot of the cranks, and a connection' between the cranks and swinging 3. A' railway signal wire compensator, comprising two weighted cranks mounted on a common pivot and to, which are attached respectively the wires. leading tothe signal and signallever, a swinging member,"and a connection between the swinging member and the members of the cranks carrying the weightsQ Y 4. A' railway signal wire compensator, comprising two weighted cranksto which are attached respectively thewires leading; from the 'signaland signal lever, a'flo'a'ting lever, links pivoted to the cranks and pivotally and 'slidabl'y connected with the floating lepin for engaging the teeth of the floating lever. I I h p 1 '6. A railway slgn'al wlre compensator,

wire compensator,

comprising two weighted Qcranks to which are attached respectively the wires leading from the signal and signallever, a pivoted and spring pressed floating lever provided.

with a longitudinal'slot and teeth, a stop for said lever, links pivoted at one endKto the cranks and having their other endsi-provided with slots, one of the'links being pro-' vided with a pin for engaging the teeth of the floatin lever, and a pin passing through the slots 0 the links and floating lever.

19th January, 1917. r j REGINALD LIONEL-POWELL. -Wi'tness'es: 1 i

'H- VWAIRIH i I for five cents each,' by;Mdressing' the Gonimissionerof Patents 

